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Cressey TR, Siriprakaisil O, Kubiak RW, Klinbuayaem V, Sukrakanchana PO, Quame-Amaglo J, Okochi H, Tawon Y, Cressey R, Baeten JM, Gandhi M, Drain PK. Plasma pharmacokinetics and urinary excretion of tenofovir following cessation in adults with controlled levels of adherence to tenofovir disoproxil fumarate. Int J Infect Dis 2020; 97:365-370. [PMID: 32553717 PMCID: PMC7392195 DOI: 10.1016/j.ijid.2020.06.037] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Revised: 06/09/2020] [Accepted: 06/10/2020] [Indexed: 11/24/2022] Open
Abstract
OBJECTIVES The aim was to fully characterize the plasma and urine washout pharmacokinetics of tenofovir (TFV) in adults following 6 weeks of controlled levels of tenofovir disoproxil fumarate (TDF) adherence, in order to inform the utility of clinic-based adherence testing. DESIGN This was a three-arm, randomized, open-label study in adult volunteers. Participants were randomized to receive TDF 300 mg/emtricitabine (FTC) 200 mg as (1) 7 doses/week (perfect adherence), (2) 4 doses/week (moderate adherence), or (3) 2 doses/week (low adherence). Plasma and urine samples were collected regularly during the 6-week dosing phase and for 4 weeks following drug cessation. RESULTS Twenty-eight adults were included in this analysis. Median (range) age was 33 (20-49) years. No differences in TFV pharmacokinetic parameters during the washout were observed across the study arms. Small differences in TFV plasma concentrations occurred across arms between 4 and 10 h post-dose. The cumulative amount of TFV excreted in urine was not different at 24 h post-dose, but at 148 h it was 24.8 mg, 21.0 mg, and 17.2 mg for the perfect, moderate, and low adherence arms, respectively (p = 0.043). CONCLUSIONS Among adults with different TDF adherence patterns, relative differences in plasma concentrations and cumulative urine extraction of TFV were minor following cessation. TFV measurement in plasma or urine is more indicative of last drug ingestion, rather than prior dose patterns.
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Affiliation(s)
- Tim R Cressey
- PHPT/IRD UMI 174, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai, Thailand; Department of Immunology and Infectious Diseases, Boston, Harvard T.H. Chan School of Public Health, Boston, MA, USA; Department of Molecular and Clinical Pharmacology, University of Liverpool, Liverpool, UK.
| | | | - Rachel W Kubiak
- Department of Epidemiology, University of Washington, Seattle, WA, USA
| | | | - Pra-Ornsuda Sukrakanchana
- PHPT/IRD UMI 174, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai, Thailand
| | | | - Hideaki Okochi
- Department of Medicine, University of California-San Francisco (UCSF), San Francisco, CA, USA
| | - Yardpiroon Tawon
- PHPT/IRD UMI 174, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai, Thailand
| | - Ratchada Cressey
- Department of Medical Technology, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai, Thailand
| | - Jared M Baeten
- Department of Epidemiology, University of Washington, Seattle, WA, USA; Department of Global Health, University of Washington, Seattle, WA, USA; Department of Medicine, University of Washington, Seattle, USA
| | - Monica Gandhi
- Department of Medicine, University of California-San Francisco (UCSF), San Francisco, CA, USA
| | - Paul K Drain
- Department of Epidemiology, University of Washington, Seattle, WA, USA; Department of Global Health, University of Washington, Seattle, WA, USA; Department of Medicine, University of Washington, Seattle, USA
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Kitidee K, Khamaikawin W, Thongkum W, Tawon Y, Cressey TR, Jevprasesphant R, Kasinrerk W, Tayapiwatana C. Expedient screening for HIV-1 protease inhibitors using a simplified immunochromatographic assay. J Chromatogr B Analyt Technol Biomed Life Sci 2015; 1021:153-158. [PMID: 26490422 DOI: 10.1016/j.jchromb.2015.10.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2015] [Revised: 10/02/2015] [Accepted: 10/06/2015] [Indexed: 11/19/2022]
Abstract
A colloidal gold-based immunochromatographic (IC) strip test was developed and validated for the detection of HIV-1 protease (HIV-PR) activity and inhibitory effect of HIV-PR inhibitors (PIs). It is a unique 'two-step' process requiring the combination of proteolysis of HIV-PR and an immunochromatographic reaction. Monoclonal antibodies to the free C-terminus of HIV matrix protein (HIV-MA) conjugated to gold particles and a monoclonal antibody against intact and cleaved forms of the HIV-MA are immobilized on the 'Test'-line of the IC strip. Using lopinavir, a potent HIV protease inhibitor, the IC-strip was optimized to detect inhibitory activity against HIV-protease. At a lopinavir concentration of 1000ng/mL (its suggested minimum effective concentration), a HIV-PRH6 concentration of 6mg/mL and incubation period of 60min were the optimal conditions. A preliminary comparison between a validated high-performance liquid chromatography assay and the IC-strip to semi-quantify HIV protease inhibitor concentrations (lopinavir and atazanavir) demonstrated good agreement. This simplified method is suitable for the rapid screening of novel protease inhibitors for future therapeutic use. Moreover, the IC strip could also be optimized to semi-quantify PIs concentrations in plasma samples.
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Affiliation(s)
- Kuntida Kitidee
- Center for Research and Innovation, Faculty of Medical Technology, Mahidol University, Bangkok 10700, Thailand
| | - Wannisa Khamaikawin
- Division of Clinical Immunology, Department of Medical Technology, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Weeraya Thongkum
- Division of Clinical Immunology, Department of Medical Technology, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai 50200, Thailand; i+MED Laboratories Company Limited, Bangkok, Thailand
| | - Yardpiroon Tawon
- Program for HIV Prevention and Treatment (PHPT/IRD 174), Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Tim R Cressey
- Program for HIV Prevention and Treatment (PHPT/IRD 174), Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai 50200, Thailand; Harvard T.H Chan School of Public Health, Boston, MA 02115, USA
| | | | - Watchara Kasinrerk
- Division of Clinical Immunology, Department of Medical Technology, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai 50200, Thailand; Biomedical Technology Research Unit, National Center for Genetic Engineering and Biotechnology, National Science and Technology Development Agency at the Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Chatchai Tayapiwatana
- Division of Clinical Immunology, Department of Medical Technology, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai 50200, Thailand; Center of Biomolecular Therapy and Diagnostic, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai 50200, Thailand.
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Rattanapunya S, Cressey TR, Rueangweerayut R, Tawon Y, Kongjam P, Na-Bangchang K. Pharmacokinetic Interactions Between Quinine and Lopinavir/Ritonavir in Healthy Thai Adults. Am J Trop Med Hyg 2015; 93:1383-90. [PMID: 26416104 DOI: 10.4269/ajtmh.15-0453] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2015] [Accepted: 08/16/2015] [Indexed: 01/12/2023] Open
Abstract
This study aimed to investigate the pharmacokinetic interactions between quinine and lopinavir boosted with ritonavir (LPV/r) in healthy Thai adults (8 males and 12 females). Period 1 (day 1): subjects received a single oral dose of 600 mg quinine sulfate. Period 2: subjects received LPV/r (400/100 mg) twice daily. Period 3: subjects received a single quinine sulfate dose plus LPV/r twice a day. Intensive blood sampling was performed during each phase. Quinine AUC0-48h (area under the plasma concentration-time curve from time 0 to 48 hours), AUC0-∞ (area under the plasma concentration-time curve from time 0 to infinity), and Cmax (maximum concentration over the time-span specified), were 56%, 57%, and 47% lower, respectively, in the presence of LPV/r. 3-Hydroxyquinine AUC0-48h, AUC0-∞, and Cmax were significantly lower and the metabolite-to-parent ratio was significantly reduced. Lopinavir and ritonavir exposures were not significantly reduced with quinine coadministration, but Cmax of both drugs were significantly lower. The geometric mean ratio (GMR) and 90% CI of AUC0-48h, AUC0-∞, and Cmax for quinine, 3-hydroxyquinine, lopinavir, and ritonavir lay outside the bioequivalent range of 0.8-1.25. Drug treatments during all periods were generally well tolerated. The reduction in systemic exposure of quinine and 3-hydroxyquinine with concomitant LPV/r use raises concerns of suboptimal exposure. Studies in HIV/malaria coinfection patients are needed to determine the clinical impact to decide if any change to the quinine dose is warranted.
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Affiliation(s)
- Siwalee Rattanapunya
- Faculty of Science and Technology, Chiang Mai Rajabhat University, Chaing Mai, Thailand; Program for HIV Prevention and Treatment, Department of Medical Technology, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai, Thailand; Harvard School of Public Health, Boston, Massachusetts; Mae Sot General Hospital, Tak Province, Thailand; Center of Excellence in Pharmacology and Molecular Biology of Malaria and Cholangiocarcinoma, Thammasat University, Pathumthani, Thailand; Graduate Program in Bioclinical Sciences, Chulabhorn International College of Medicine, Thammasat University, Pathumthani, Thailand
| | - Tim R Cressey
- Faculty of Science and Technology, Chiang Mai Rajabhat University, Chaing Mai, Thailand; Program for HIV Prevention and Treatment, Department of Medical Technology, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai, Thailand; Harvard School of Public Health, Boston, Massachusetts; Mae Sot General Hospital, Tak Province, Thailand; Center of Excellence in Pharmacology and Molecular Biology of Malaria and Cholangiocarcinoma, Thammasat University, Pathumthani, Thailand; Graduate Program in Bioclinical Sciences, Chulabhorn International College of Medicine, Thammasat University, Pathumthani, Thailand
| | - Ronnatrai Rueangweerayut
- Faculty of Science and Technology, Chiang Mai Rajabhat University, Chaing Mai, Thailand; Program for HIV Prevention and Treatment, Department of Medical Technology, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai, Thailand; Harvard School of Public Health, Boston, Massachusetts; Mae Sot General Hospital, Tak Province, Thailand; Center of Excellence in Pharmacology and Molecular Biology of Malaria and Cholangiocarcinoma, Thammasat University, Pathumthani, Thailand; Graduate Program in Bioclinical Sciences, Chulabhorn International College of Medicine, Thammasat University, Pathumthani, Thailand
| | - Yardpiroon Tawon
- Faculty of Science and Technology, Chiang Mai Rajabhat University, Chaing Mai, Thailand; Program for HIV Prevention and Treatment, Department of Medical Technology, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai, Thailand; Harvard School of Public Health, Boston, Massachusetts; Mae Sot General Hospital, Tak Province, Thailand; Center of Excellence in Pharmacology and Molecular Biology of Malaria and Cholangiocarcinoma, Thammasat University, Pathumthani, Thailand; Graduate Program in Bioclinical Sciences, Chulabhorn International College of Medicine, Thammasat University, Pathumthani, Thailand
| | - Panida Kongjam
- Faculty of Science and Technology, Chiang Mai Rajabhat University, Chaing Mai, Thailand; Program for HIV Prevention and Treatment, Department of Medical Technology, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai, Thailand; Harvard School of Public Health, Boston, Massachusetts; Mae Sot General Hospital, Tak Province, Thailand; Center of Excellence in Pharmacology and Molecular Biology of Malaria and Cholangiocarcinoma, Thammasat University, Pathumthani, Thailand; Graduate Program in Bioclinical Sciences, Chulabhorn International College of Medicine, Thammasat University, Pathumthani, Thailand
| | - Kesara Na-Bangchang
- Faculty of Science and Technology, Chiang Mai Rajabhat University, Chaing Mai, Thailand; Program for HIV Prevention and Treatment, Department of Medical Technology, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai, Thailand; Harvard School of Public Health, Boston, Massachusetts; Mae Sot General Hospital, Tak Province, Thailand; Center of Excellence in Pharmacology and Molecular Biology of Malaria and Cholangiocarcinoma, Thammasat University, Pathumthani, Thailand; Graduate Program in Bioclinical Sciences, Chulabhorn International College of Medicine, Thammasat University, Pathumthani, Thailand
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Cressey TR, Avihingsanon A, Halue G, Leenasirimakul P, Sukrakanchana PO, Tawon Y, Jaisieng N, Jourdain G, Podany AT, Fletcher CV, Klinbuayaem V, Bowonwatanuwong C. Plasma and Intracellular Pharmacokinetics of Tenofovir Disoproxil Fumarate 300 mg Every 48 Hours vs 150 mg Once Daily in HIV-Infected Adults With Moderate Renal Function Impairment. Clin Infect Dis 2015; 61:633-9. [PMID: 25921689 DOI: 10.1093/cid/civ346] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2015] [Accepted: 04/21/2015] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND The approved tenofovir disoproxil fumarate (TDF) dose of 300 mg every 48 hours for adults with moderate renal impairment is often confusing and inconvenient. Using a new TDF formulation, we compared the pharmacokinetics of the standard dose with a dose of 150 mg once daily in HIV-infected adults. METHODS This was an open-label pharmacokinetic study. Virologically suppressed HIV-infected adults with a creatinine clearance 30 to <50 mL/minute receiving TDF 300 mg every 48 hours as part of a nonnucleoside reverse transcriptase inhibitor (NNRTI)- or lopinavir/ritonavir (LPV/r)-based regimen were enrolled. Intensive 48-hour blood sampling for pharmacokinetic assessment was performed at enrollment, after which the TDF dose was changed to 150 mg once daily. Two weeks later, 24-hour blood sampling was performed; subjects then returned to the standard dose. Tenofovir (TFV) pharmacokinetic parameters were calculated using a noncompartmental analysis. RESULTS Forty adults (55% female) were enrolled: 20 receiving NNRTI-based and 20 receiving LPV/r-based treatment. Median age was 56 years (range, 44-65 years), weight 51 kg (range, 38-80 kg), and creatinine clearance 43.9 mL/minute (range, 30.9-49.7 mL/minute). The TFV geometric mean ratio of the area under the curve (AUC0-48 h) for every 24 hours vs every 48 hours was 1.09 (90% confidence interval [CI], .98-1.22) and 1.00 (90% CI, .92-1.09) for patients receiving NNRTI- and LPV/r-based treatment, respectively. Concomitant LPV/r use markedly increased TFV plasma concentrations, and AUC0-48 h was 67% higher with the standard dose, whereas no differences in intracellular TFV diphosphate concentrations were observed. All subjects remained virologically suppressed, and no drug-related adverse events were reported. CONCLUSIONS TDF 150 mg every 24 hours provides comparable systemic exposure to the standard dose of 300 mg every 48 hours in patients with moderate renal impairment. CLINICAL TRIALS REGISTRATION NCT01671982.
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Affiliation(s)
- Tim R Cressey
- Program for HIV Prevention and Treatment, Faculty of Associated Medical Sciences, Chiang Mai University, Thailand Harvard School of Public Health, Boston, Massachusetts Institut de Recherche pour le Développement UMI 174-Program for HIV Prevention and Treatment, Marseille, France
| | - Anchalee Avihingsanon
- HIV Netherlands Australia Thailand Research Collaboration, Thai Red Cross AIDS Research Centre Division of Allergy and Immunology, Faculty of Medicine, Chulalongkorn University, Bangkok
| | | | | | - Pra-Ornsuda Sukrakanchana
- Program for HIV Prevention and Treatment, Faculty of Associated Medical Sciences, Chiang Mai University, Thailand
| | - Yardpiroon Tawon
- Program for HIV Prevention and Treatment, Faculty of Associated Medical Sciences, Chiang Mai University, Thailand
| | - Nirattiya Jaisieng
- Program for HIV Prevention and Treatment, Faculty of Associated Medical Sciences, Chiang Mai University, Thailand
| | - Gonzague Jourdain
- Program for HIV Prevention and Treatment, Faculty of Associated Medical Sciences, Chiang Mai University, Thailand Harvard School of Public Health, Boston, Massachusetts Institut de Recherche pour le Développement UMI 174-Program for HIV Prevention and Treatment, Marseille, France
| | - Anthony T Podany
- Antiviral Pharmacology Laboratory, College of Pharmacy, University of Nebraska Medical Center, Omaha
| | - Courtney V Fletcher
- Antiviral Pharmacology Laboratory, College of Pharmacy, University of Nebraska Medical Center, Omaha
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Sukasem C, Cressey TR, Prapaithong P, Tawon Y, Pasomsub E, Srichunrusami C, Jantararoungtong T, Lallement M, Chantratita W. Pharmacogenetic markers of CYP2B6 associated with efavirenz plasma concentrations in HIV-1 infected Thai adults. Br J Clin Pharmacol 2013; 74:1005-12. [PMID: 22471906 DOI: 10.1111/j.1365-2125.2012.04288.x] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
AIMS To investigate the frequency of CYP2B6 polymorphisms and the influence of haplotype structure on plasma efavirenz concentrations in Thai adults with HIV-1 infection. METHODS Genotyping of nine single nucleotide polymorphisms (SNPs, c.64C>T, c.499C>G, c.516G>T, c.785A>G, c.1375A>G, c.1459C>T, g.3003T>C, g.18492C>T and g.21563C>T) of CYP2B6 were performed using real-time PCR-based allelic discrimination on blood samples from 52 HIV-infected adults who had received an efavirenz-based regimen. Plasma efavirenz concentrations were measured by high performance liquid chromatography. RESULTS The minor allele frequencies for c.64C>T, c.516G>T, c.785A>G, g.3003C>T, g.18492T>C and g.21563C>T were 0.087, 0.365, 0.413, 0.308 and 0.356, respectively. However, no variant alleles were identified for three SNPs (c.499 C>G, c.1375 A>G and c.1459 C>T). Efavirenz plasma concentrations were significantly associated with c.516G>T (P= 0.0095), c.785A>G (P= 0.0017), g.21563C>T (P= 0.0036) and g.18492C>T (P= 0.0011). The composite CYP2B6 of three SNPs (c.516G ≥ T, c.785A ≥ G and g.21563C ≥ T) genotypes were significantly associated with higher efavirenz concentrations. CONCLUSIONS Our data indicate that the GAC-CYP2B6 haplotype is associated with higher plasma efavirenz concentrations in HIV-infected Thai adults.
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Affiliation(s)
- Chonlaphat Sukasem
- Laboratory for Pharmacogenomics and Personalized Medicine, Department of Pathology, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok, Thailand.
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Chantarangsu S, Cressey TR, Mahasirimongkol S, Capparelli E, Tawon Y, Ngo-Giang-Huong N, Jourdain G, Lallemant M, Chantratita W. Influence of CYP2B6 polymorphisms on the persistence of plasma nevirapine concentrations following a single intra-partum dose for the prevention of mother to child transmission in HIV-infected Thai women. J Antimicrob Chemother 2009; 64:1265-73. [PMID: 19812066 DOI: 10.1093/jac/dkp351] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
OBJECTIVES To investigate the association of single nucleotide polymorphisms (SNPs) with nevirapine concentrations following intra-partum single-dose nevirapine. METHODS Plasma and DNA samples were obtained from 330 HIV-infected Thai women who received intra-partum single-dose nevirapine in the PHPT-2 clinical trial to prevent perinatal HIV transmission. Nine SNPs within CYP2B6, CYP3A4 and ABCB1 were genotyped by real-time PCR. Nevirapine plasma concentrations were determined by HPLC and used in a population pharmacokinetic analysis. RESULTS Higher nevirapine exposure was observed in women carrying the CYP2B6 516G>T polymorphism, but this did not reach statistical significance (P = 0.054). The TGATC CYP2B6 haplotype (g.3003T, 516G, 785A, g.18492T and g.21563C) was associated with increased nevirapine clearance and lower exposure (P = 0.0029). The median time for nevirapine concentrations to reach 10 ng/mL post-partum (nevirapine IC(50) for HIV-1) was 14 days [interquartile range (IQR, 14-18)] for TGATC homozygotes, 16 days (14-20) for TGATC heterozygotes and 18 days (14-20) for non-TGATC homozygotes (P = 0.020). CONCLUSIONS The CYP2B6 516G>T impact on nevirapine concentrations was less pronounced after intra-partum single-dose nevirapine than reported under steady-state conditions, perhaps due to lack of enzyme auto-induction at the time of dosing. Although the TGATC CYP2B6 haplotype may shorten the persistence of nevirapine post-partum, its practical implications for the prevention of HIV transmission or selection of resistance mutations are likely limited.
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Affiliation(s)
- Soranun Chantarangsu
- Department of Pathology, Faculty of Medicine, Ramathibodi Hospital, Mahidol University, Bangkok, Thailand
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Cressey TR, Nangola S, Tawon Y, Pattarawarapan M, Lallemant M, Tayapiwatana C. Immunochromatographic strip test for rapid detection of nevirapine in plasma samples from human immunodeficiency virus-infected patients. Antimicrob Agents Chemother 2007; 51:3361-3. [PMID: 17606683 PMCID: PMC2043209 DOI: 10.1128/aac.00445-07] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
We report a novel one-step immunochromatographic strip test for the rapid, qualitative detection of nevirapine in plasma samples from human immunodeficiency virus-infected patients. The sensitivity was 100% (95% confidence interval [95% CI], 97.8 to 100%), and the specificity was 99.5% (95% CI, 97.2 to 99.9%). The limit of detection was 25 ng/ml. Immunochromatographic strip tests are simple, rapid, and cheap assays that could greatly facilitate drug level monitoring in resource-limited settings.
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Affiliation(s)
- Tim R Cressey
- Harvard School of Public Health, Harvard University, Boston, MA, USA
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Chantarangsu S, Cressey T, Mahasirimongkol S, Tawon Y, Ngo-Giang-Huong N, Jourdain G, Lallemant M, Chantratita W. Comparison of the TaqMan and LightCycler systems in evaluation of CYP2B6 516G>T polymorphism. Mol Cell Probes 2007; 21:408-11. [PMID: 17669622 DOI: 10.1016/j.mcp.2007.06.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2007] [Revised: 04/19/2007] [Accepted: 06/04/2007] [Indexed: 11/16/2022]
Abstract
Understanding genetically encoded inherited differences in drug metabolism and drug targets offers the promise of minimizing adverse drug reactions and improving therapies. We have compared two real-time PCR-based methods, the TaqMan and LightCycler for the pharmacogenetic evaluation of CYP2B6 516G>T polymorphism. Both methods were found to be suitable for pharmacogenetic testing of CYP2B6 516G>T in the meaning of time consumption, accurate genotype calling, flexible reaction format, simple data analysis, and low cost per assay. The genotype success rate was similar, but the LightCycler procedure was less expensive in terms of cost per sample and shorter running time.
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Affiliation(s)
- Soranun Chantarangsu
- Virology and Molecular Microbiology, Department of Pathology, Faculty of Medicine, Ramathibodi Hospital, Mahidol University, 270 Rama VI Road, Phrayathai, Rajthaewee, Bangkok 10400, Thailand
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Cressey TR, Leenasirimakul P, Jourdain G, Tawon Y, Sukrakanchana PO, Lallemant M. Intensive Pharmacokinetics of Zidovudine 200 mg Twice Daily in HIV-1-Infected Patients Weighing Less Than 60 kg on Highly Active Antiretroviral Therapy. J Acquir Immune Defic Syndr 2006; 42:387-9. [PMID: 16810125 DOI: 10.1097/01.qai.0000221685.90681.1b] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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